South African Journal of Animal Science最新文献_第2页

Solvent-extracted cashew nut meal as a dietary protein source for layer chicks 溶剂萃取腰果粉作为蛋鸡的日粮蛋白质来源

IF 0.8 4区农林科学

South African Journal of Animal Science Pub Date : 2024-02-15 DOI: 10.4314/sajas.v53i3.12

G.M.M. Coffi, Y. Yapi, T. Tiho, K. J. Alla, D. Soro, K. Koffi

{"title":"Solvent-extracted cashew nut meal as a dietary protein source for layer chicks","authors":"G.M.M. Coffi, Y. Yapi, T. Tiho, K. J. Alla, D. Soro, K. Koffi","doi":"10.4314/sajas.v53i3.12","DOIUrl":"https://doi.org/10.4314/sajas.v53i3.12","url":null,"abstract":"This study aimed to produce a low-fat cashew nut meal (CNM) containing less than 6% fat and assess its effect on layer chick growing performance and health status. The experiment used 225 one-day-old layer ISA Brown chicks with an average live weight of 27.38 ± 1.85 g, divided into 15 batches of 15 animals each. Five diets containing 0, 25, 50, 75, and 100% CNM as a replacement for soybean meal were tested. The test included three replicates of 15 chicks for each diet. The CNM was obtained after oil extraction using an automatic press followed by solvent extraction. The CNM contained 40.6% crude protein and 5.38% fat. Except for the chicks fed on the 100% CNM diet that had the worst growth performance parameters, those on the other diets had an average final live weight of 662.13 g and an average feed conversion ratio of 2.76. The highest average daily gain (15,07g/d) was observed in chicks on the 75% CNM diet. Hematological analyses showed no marked difference between the animal groups. Regarding the blood biochemical profile, the total cholesterol levels were similar in the chicks for all diets. High-density lipoprotein cholesterol levels were 1.4 times higher in the chicks fed on CNM-based diets compared to those fed a soybean meal-based diet. It was concluded that low-fat CNM could replace soybean meal by up to 75% in layer chick feed without negative effects on growth performance and health status.","PeriodicalId":21869,"journal":{"name":"South African Journal of Animal Science","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139775877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Slaughter and carcass characteristics of cross- and purebred lambs finished in a pasture-based system 以牧草为基础的饲养系统中杂交羔羊和纯种羔羊的屠宰和胴体特征

IF 0.8 4区农林科学

South African Journal of Animal Science Pub Date : 2024-02-15 DOI: 10.4314/sajas.v53i3.07

P. G. Theron, T.S. Brand, Schalk W P Cloete, J.H.C van Zyl, P.E. Strydom

引用次数: 0

Golden mussel shell (Limnoperna fortunei) flour contaminated with cadmium as a calcium source for broiler chickens 受镉污染的金贻贝壳（Limnoperna fortunei）面粉作为肉鸡的钙源

IF 0.8 4区农林科学

South African Journal of Animal Science Pub Date : 2024-02-15 DOI: 10.4314/sajas.v53i3.13

L. Wachholz, T.S. Andrade, C. Souza, J. Broch, E. H. Cirilo, A.S. Avila, G. Toniazzo, C. Kaufmann, P. Carvalho, C. Eyng, R.V. Nunes

{"title":"Golden mussel shell (Limnoperna fortunei) flour contaminated with cadmium as a calcium source for broiler chickens","authors":"L. Wachholz, T.S. Andrade, C. Souza, J. Broch, E. H. Cirilo, A.S. Avila, G. Toniazzo, C. Kaufmann, P. Carvalho, C. Eyng, R.V. Nunes","doi":"10.4314/sajas.v53i3.13","DOIUrl":"https://doi.org/10.4314/sajas.v53i3.13","url":null,"abstract":"The objective of this study was to evaluate the effects of golden mussel flour (GMSF) contaminated with increasing rates of cadmium (Cd) as a replacement for limestone as a Ca source, in broiler chicken feed from 14 to 42 days of age. A total of 60 animals were assigned to four treatments (inclusion rates of Cd: 6.94, 14.55, 22.40, and 30.00 mg Cd kg-¹) with five replications in a completely randomized design. At 42 d, blood samples were collected to evaluate serum concentrations of aspartate amino transferase (AST), alanine amino transferase (ALT), gamma glutamyl transferase (GGT), total bilirubin, Ca, P, and Cd. After slaughter, tissues were collected to evaluate Cd concentration in bone parameters. Growth performance of broiler chickens and Cd content in the breast meat were not affected by the inclusion rates of Cd in the GMSF. However, there was an effect of Cd in GMSF on the concentration of Cd in the skin, liver, bones, feathers, and serum; ALT; and total bilirubin. Bone flexibility had a quadratic response to increasing inclusion rates of GMSF; serum Ca concentration increased linearly and there was no effect on serum P concentration. Concentrations of Cd in GMSF above 20 mg kg-¹ caused high Cd contamination in broiler tissues. Therefore, it was concluded that Cd concentrations above 6.94 mg kg-¹ in broiler diets caused high Cd concentrations in meat and organs that are above those permitted for human consumption","PeriodicalId":21869,"journal":{"name":"South African Journal of Animal Science","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139836061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microbiological quality assessment of milk and its fermented derivatives produced in the Sfax region, Tunisia 突尼斯斯法克斯地区生产的牛奶及其发酵衍生物的微生物质量评估

IF 0.8 4区农林科学

South African Journal of Animal Science Pub Date : 2024-02-15 DOI: 10.4314/sajas.v53i3.03

R. Jarboui, H. Ghamgui, S. Smaoui, E. Ammar

{"title":"Microbiological quality assessment of milk and its fermented derivatives produced in the Sfax region, Tunisia","authors":"R. Jarboui, H. Ghamgui, S. Smaoui, E. Ammar","doi":"10.4314/sajas.v53i3.03","DOIUrl":"https://doi.org/10.4314/sajas.v53i3.03","url":null,"abstract":"The aim of this study was to evaluate the microbial quality and safety of milk and its derivatives in the Sfax area, Tunisia. Two hundred and forty samples of ultra-high temperature sterilized milk (UHT) and pasteurized milk, and its derivatives (yoghurt, fermented milk, cheese, and butter), collected from in-dustrial sale sites and traditional small-scale dairy processing units, were microbiologically analysed and the results compared to the European commission (EC, 2004) maximum limits. All the UHT steri-lized milks analysed were free of microbial contamination and packaging-stable. However, pasteurized milk by thermal treatment at 63 °C for 30 min showed that 41 and 13% of samples were contaminated with total microbial count (TMC) and Escherichia coli. In the analysed samples, total and faecal coliform bacteria (TC and FC) counts exceeded the EU limits in 17 and 9% of industrial yoghurts; 85 and 54% of traditional yoghurts, and 57 and 29% of traditional butters, respectively. Furthermore, all studied fermented milks (Lben and Raieb) exceeded the EU coliform limits. Considering the traditional soft cheese made with pasteurized milk, 61% of the analysed samples respected EU limits in TC except one sample contaminated with both of E. coli and Staphylococcus aureus. Salmonella spp. and Listeria monocytogenes detection showed that only one pasteurized milk sample was contaminated by L. mon-ocytogenes, without any Salmonella detection. Traditional producers must implement good manufac-turing practices and hazard analysis critical control points (HACCP) to ensure integral safety and quality of dairy products.","PeriodicalId":21869,"journal":{"name":"South African Journal of Animal Science","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139836261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Suckling piglets submitted to creep feeding management from 5 days-old showed optimal performance and exploratory behaviour 从 5 日龄开始接受爬行饲养管理的哺乳仔猪表现出最佳的生产性能和探索行为

IF 0.8 4区农林科学

South African Journal of Animal Science Pub Date : 2024-02-15 DOI: 10.4314/sajas.v53i3.10

J. D. Agnol, F. Meneghetti, T. S. Gaggini, G. A. Rodrigues, J. Genova, P. Carvalho, S. T. Carvalho, L. B. Costa, D. Paiano, A. Saraiva, C. Eyng, N. T. E. Oliveira

{"title":"Suckling piglets submitted to creep feeding management from 5 days-old showed optimal performance and exploratory behaviour","authors":"J. D. Agnol, F. Meneghetti, T. S. Gaggini, G. A. Rodrigues, J. Genova, P. Carvalho, S. T. Carvalho, L. B. Costa, D. Paiano, A. Saraiva, C. Eyng, N. T. E. Oliveira","doi":"10.4314/sajas.v53i3.10","DOIUrl":"https://doi.org/10.4314/sajas.v53i3.10","url":null,"abstract":"This study aimed to assess the effects of starting creep feeding at different ages on performance, behaviour, haematological, and biochemical parameters in piglets. A total of 138 piglets (1.34 ± 0.25 kg, n = 13 sows), weaned at 21 d-old, were assigned to treatments using a completely randomized design. The litter was divided into two groups: seven litters (n = 80 piglets) were subjected to creep feeding on the fifth day of age (creep 5) and five litters (n = 58 piglets), on the tenth day of age (creep 10). Piglets were weighed at birth, weaning, and after the first week in the nursery. Piglet behaviour was evaluated daily for 15 min until day 20. Blood was collected on day 13, at weaning, and at the end of the first week in the nursery. There was no difference in body weight in the suckling phase, but piglets fed Creep 5 showed greater body weight gain in the first nursery week. The Creep 5 group had lower feed leftovers during the five days of evaluation of feed intake. There were no differences in haematological parameters and amylase concentration; however, the piglets spent more time lying down, sucking, and massaging the udder. On day 8, the piglets in the Creep 5 group showed a higher frequency of exploratory behaviour. In conclusion, piglets fed Creep 5 had optimal performance after weaning and improved feed intake capacity by displaying more exploratory behaviour than Creep 10. Creep management did not alter haematological and biochemical parameters.","PeriodicalId":21869,"journal":{"name":"South African Journal of Animal Science","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139836411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of herbal extracts as alternatives to antibiotics in the first week of age on broiler performance, serum biochemistry, and intestinal morphology under commercial farm conditions 在商业化农场条件下，将草药提取物作为第一周龄抗生素的替代品对肉鸡生产性能、血清生化指标和肠道形态的影响

IF 0.8 4区农林科学

South African Journal of Animal Science Pub Date : 2024-02-15 DOI: 10.4314/sajas.v53i3.14

W. H. Hassan, M. M. Mustafa, R. H. Isa

{"title":"Effect of herbal extracts as alternatives to antibiotics in the first week of age on broiler performance, serum biochemistry, and intestinal morphology under commercial farm conditions","authors":"W. H. Hassan, M. M. Mustafa, R. H. Isa","doi":"10.4314/sajas.v53i3.14","DOIUrl":"https://doi.org/10.4314/sajas.v53i3.14","url":null,"abstract":"This study was performed to show the effect of two herbal extracts as alternatives to antibiotics in the first eight days of rearing on broiler performance, serum biochemistry, and the jejunum morphology of the broiler. A total of 264, one-day Ross 308 chicks were used. They were randomly distributed into four treatments including three replicates of each. T1 was the control (nothing in drinking water), T2 had antibiotics in the drinking water (1 g/L of Gentadox), T3 had ENTERIA in the drinking water (0.5ml/L), T4 had ICEN in the drinking water (0.5ml/L). These products were administered for the first eight consecutive days of rearing. In the first seven days, there was no substantial variation in performance found in all groups. From days 8–14, T3 markedly improved body weight gain (BWG). The feed conversion ratio (FCR), thyroid hormones, total protein, and globulin were substantially improved in T3 and T4. The edible internal organs and heart percentage was substantially increased in the herbal groups. All the jejunum histology parameters, except the crypt depth, were substantially increased in T3. The T3 recorded the best bodyweight uniformity and economic efficiency compared to other groups. Similarly, the yolk sac residual at days 4 and 7 was lower in this group compared to other groups. It can be concluded that herbal extracts can replace antibiotics in improving and enhancing general broiler performance.","PeriodicalId":21869,"journal":{"name":"South African Journal of Animal Science","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139775972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Short Communication - Possible aetiology of the posterior presentation in Perosomus elumbis 简短交流--钝头鲈后发症的可能病因

IF 0.8 4区农林科学

South African Journal of Animal Science Pub Date : 2024-02-15 DOI: 10.4314/sajas.v53i3.05

D. Petrović, I. Pihler, I. Stančić, J. Dzigurski, A. Bozić, B. Toholj, K. G. Bukurov, S. Sekulić

{"title":"Short Communication - Possible aetiology of the posterior presentation in Perosomus elumbis","authors":"D. Petrović, I. Pihler, I. Stančić, J. Dzigurski, A. Bozić, B. Toholj, K. G. Bukurov, S. Sekulić","doi":"10.4314/sajas.v53i3.05","DOIUrl":"https://doi.org/10.4314/sajas.v53i3.05","url":null,"abstract":"The aetiology of foetal presentation in cattle is still unresolved. The hind legs are the main source of propulsive movement in cattle, which provides changes in foetal presentation. The assumption is that in the absence of hind leg movements of the foetus, as in the case of the congenital malformation, Perosomus elumbis, the incidence of the anterior and posterior presentation will be the same. The Scopus database, the world wide web (www), and the list of article references were searched using the keyword, Perosomus elumbis. Manuscripts with data about the foetal presentation were included and 21 cases in 16 articles were identified. There were 11 cases of anterior presentation and 10 of posterior presentation. The Chi-square test didn't show a statistically significant difference between the incidence of anterior and posterior presentation. This finding supports the assumption that the posterior presentation is the result of the random occupying of the intrauterine space with the same probability of anterior and posterior presentation. To confirm or exclude at random the occupant of the intrauterine space with the same probability for anterior and posterior presentation as a general mechanism for posterior presentation in cattle foetuses, it is necessary to determine the incidence of foetal presentation at birth in various veterinary entities accompanied by an increased incidence of posterior presentation. The aim of the paper was to investigate the incidence of posterior and anterior presentation in Perosomus elumbis.","PeriodicalId":21869,"journal":{"name":"South African Journal of Animal Science","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139774259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Supplementation of dietary nano zinc phytogenic on growth performance and carcass traits of the growing Kampung Unggul Balitbangtan chickens 日粮中添加纳米植物锌对甘榜翁谷巴里班丹鸡生长性能和胴体特征的影响

IF 0.8 4区农林科学

South African Journal of Animal Science Pub Date : 2024-02-15 DOI: 10.4314/sajas.v53i3.02

C. Hidayat, E. Wina, A. B. L. Ishak, R. Krisnan, Komarudin Komarudin, S. A. Asmarasari, H. Zainal, T. W. Cahyaningsih, Y.A. Hoesen

{"title":"Supplementation of dietary nano zinc phytogenic on growth performance and carcass traits of the growing Kampung Unggul Balitbangtan chickens","authors":"C. Hidayat, E. Wina, A. B. L. Ishak, R. Krisnan, Komarudin Komarudin, S. A. Asmarasari, H. Zainal, T. W. Cahyaningsih, Y.A. Hoesen","doi":"10.4314/sajas.v53i3.02","DOIUrl":"https://doi.org/10.4314/sajas.v53i3.02","url":null,"abstract":"The objective of this experiment was to evaluate productive performance during the growing period in Kampung Unggul Balitbangtan (KUB) chickens fed on low- and high-nutrient diets containing different levels of dietary nano zinc phytogenic (NZP). The experiment followed a randomized 2 × 6 factorial design, with nutritional content of the diet (high vs low), and dietary NZP (0, 30, 60, 90, 120, or 150 mg Zn/kg) as factors. Each treatment was repeated six times. The feeding trial was carried out until ten weeks of age. Productive performance (feed consumption, FC; body weight gain, BWG; body weight, BW; mortality, feed conversion ratio, FCR; zinc consumption, ZnC; dressing percentage, carcass cut weight; visceral organ weight; and European production efficiency factor, EPEF) was measured. Up to the age of four weeks, dietary NZF dosage impacted BW, BWG, FC, and ZnC. NZP dosage had no effect on mortality. Combination of a high-nutrient diet with 90 mg Zn/kg NZP resulted in the best FCR and EPEF. Up to six weeks, dietary NZP dosage affected BW, BWG, and EPEF. Up to ten weeks of age, addition of NZP (from 30 mg Zn/kg) improved BW, FC, and EPEF. NZP at 30 mg Zn/kg resulted in the best FCR and EPEF. Dietary NZP increased production performance (BW, FC) and economic index (EPEF) in growing KUB chickens fed low- and high-nutrient diets. The recommended use is a high-nutrient diet and 90 mg Zn/kg of NZP.","PeriodicalId":21869,"journal":{"name":"South African Journal of Animal Science","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139834594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Supplementation of dietary nano zinc phytogenic on growth performance and carcass traits of the growing Kampung Unggul Balitbangtan chickens 日粮中添加纳米植物锌对甘榜翁谷巴里班丹鸡生长性能和胴体特征的影响

IF 0.8 4区农林科学

South African Journal of Animal Science Pub Date : 2024-02-15 DOI: 10.4314/sajas.v53i3.02

C. Hidayat, E. Wina, A. B. L. Ishak, R. Krisnan, Komarudin Komarudin, S. A. Asmarasari, H. Zainal, T. W. Cahyaningsih, Y.A. Hoesen

{"title":"Supplementation of dietary nano zinc phytogenic on growth performance and carcass traits of the growing Kampung Unggul Balitbangtan chickens","authors":"C. Hidayat, E. Wina, A. B. L. Ishak, R. Krisnan, Komarudin Komarudin, S. A. Asmarasari, H. Zainal, T. W. Cahyaningsih, Y.A. Hoesen","doi":"10.4314/sajas.v53i3.02","DOIUrl":"https://doi.org/10.4314/sajas.v53i3.02","url":null,"abstract":"The objective of this experiment was to evaluate productive performance during the growing period in Kampung Unggul Balitbangtan (KUB) chickens fed on low- and high-nutrient diets containing different levels of dietary nano zinc phytogenic (NZP). The experiment followed a randomized 2 × 6 factorial design, with nutritional content of the diet (high vs low), and dietary NZP (0, 30, 60, 90, 120, or 150 mg Zn/kg) as factors. Each treatment was repeated six times. The feeding trial was carried out until ten weeks of age. Productive performance (feed consumption, FC; body weight gain, BWG; body weight, BW; mortality, feed conversion ratio, FCR; zinc consumption, ZnC; dressing percentage, carcass cut weight; visceral organ weight; and European production efficiency factor, EPEF) was measured. Up to the age of four weeks, dietary NZF dosage impacted BW, BWG, FC, and ZnC. NZP dosage had no effect on mortality. Combination of a high-nutrient diet with 90 mg Zn/kg NZP resulted in the best FCR and EPEF. Up to six weeks, dietary NZP dosage affected BW, BWG, and EPEF. Up to ten weeks of age, addition of NZP (from 30 mg Zn/kg) improved BW, FC, and EPEF. NZP at 30 mg Zn/kg resulted in the best FCR and EPEF. Dietary NZP increased production performance (BW, FC) and economic index (EPEF) in growing KUB chickens fed low- and high-nutrient diets. The recommended use is a high-nutrient diet and 90 mg Zn/kg of NZP.","PeriodicalId":21869,"journal":{"name":"South African Journal of Animal Science","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139774935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In situ and in vitro degradation parameters of elephant grass silage with sugarcane bagasse 甘蔗渣青贮象草的原位和体外降解参数

IF 0.8 4区农林科学

South African Journal of Animal Science Pub Date : 2024-02-15 DOI: 10.4314/sajas.v53i3.15

R.C. Rodrigues, S.E.A.S. Cavalcante, R.P. Lana, A. Perazzo, L.S Cabral, M.C. Teixeira, I.G.R. Araujo, A.P.R. Jesus, J.S. Araújo, C.S. Costa, M.R. Martins, A.M.P. Santos, P.L.O. Rocha

{"title":"In situ and in vitro degradation parameters of elephant grass silage with sugarcane bagasse","authors":"R.C. Rodrigues, S.E.A.S. Cavalcante, R.P. Lana, A. Perazzo, L.S Cabral, M.C. Teixeira, I.G.R. Araujo, A.P.R. Jesus, J.S. Araújo, C.S. Costa, M.R. Martins, A.M.P. Santos, P.L.O. Rocha","doi":"10.4314/sajas.v53i3.15","DOIUrl":"https://doi.org/10.4314/sajas.v53i3.15","url":null,"abstract":"The objective of this study was to evaluate the chemical composition and in situ degradability of elephant grass silage dry matter with increasing levels of sugarcane bagasse. A completely randomized design was adopted with five treatments: 0, 5, 10, 15, and 20% inclusion of sugarcane bagasse on an as-fed matter basis, with five replications, totalling 25 experimental units. The increasing proportion of sugarcane bagasse analysed was favourable only in increasing the concentration of dry matter and fibre of silages and in maintaining a considerable crude protein content. In the in situ degradation assay, the addition of sugarcane bagasse in silage decreased the ruminal degradability of dry matter, and as the passage rates increased, the effective degradability decreased. In the in vitro gas production assay, the total production of gases was decreased with the inclusion of sugarcane bagasse, as did the degradability of organic matter and neutral detergent fibre. The recommendation for the inclusion of sugarcane bagasse should be analysed according to the desired objective, emphasizing that values higher than 5% can greatly compromise the final nutritive value of elephant grass silage","PeriodicalId":21869,"journal":{"name":"South African Journal of Animal Science","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139834173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0