Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Accueil du site → Doctorat → Afrique du Sud → Effect of roughage processing and feeding level on production, reproduction, and growth performance of the Red Maradi goat

University of KwaZulu-Natal (2016)

Effect of roughage processing and feeding level on production, reproduction, and growth performance of the Red Maradi goat

Abdou, Nourou

Titre : Effect of roughage processing and feeding level on production, reproduction, and growth performance of the Red Maradi goat.

Auteur : Abdou, Nourou.

Université de soutenance : University of KwaZulu-Natal

Grade : Doctor of Philosophy in Animal Science 2016

Résumé partiel
In Sahelian countries, feeds and feeding strategies are the main constraints to livestock production. To solve problems of under feeding and ensure at least animal maintenance, farmers store crop residues and bush straws which largely have low nutritive value. They have high fibre content which limit digestibility in the rumen thus commanding low intake. Hence, animals fed with these feeds produce and reproduce poorly. Among animal species, attention has been made on Red Maradi goats as dual purpose breed to alleviate poverty in rural area of Niger. To attenuate poverty, many studies have been implemented to improve the milk production of Red Maradi goat breed and the growth performance of kids. The objectives of the study were to (i) determine the nutritive value of natural straws, byproducts residues and commercial feeds available in Maradi area ; (ii) determine the effect of level of feeding on post-natal performance of dams and kids before 14 days of age ; (iii) determine the effect of previous levels of feeding on post-natal performance of dams and kids before 14 days of age ; (iv) determine the effect of level of feeding, crushing of stover, and urea-treatment of stover on production of dams and preweaning growth performance of kids ; (v) determine the effect of previous levels of feeding on the performance of does and kids before weaning ; and (vi) to determine the effect of level of feeding, crushing of stover, and urea-treatment of stover on production and reproductive performance of lactating does. To determine the nutritive value of available feed resources in southern agricultural zones of Niger and to develop strategy to improve their quality, cereal straws were treated with urea. Cereal straws, legume crop residues and concentrates were collected from Maradi area in the dry season in Niger and composite samples were used. Cereal straws were millet (Pennisetum typhoides) and sorghum (Sorghum bicolor) stovers, Diheteropogon hagerupii, Eragrostis tremula and Schizachyrium exile, legume crop residues were groundnut haulms (Arachis hypogea), and cowpea (Vigna unguiculata) husk and concentrates were millet bran, wheat bran and cottonseed cake. Samples of straws and cowpea husk were treated with 3% urea ; then all feed samples were untreated. Chemical composition and in vitro digestibility of feeds were done in the laboratory. Dry matter (DM), organic matter (OM), nitrogen (N), neutral detergent fibre (NDF), acid detergent fibre (ADF), acid detergent lignin (ADL) and acid detergent insoluble nitrogen (ADIN) were analyzed. Degradability characteristics were determined. Type of straws affected chemical composition whereas urea treatment increased N and ADIN content. Legume crop residues differed in NDF and N content. Urea treatment of cowpea husk increased N but it produced objectionable odors. Concentrates differed in N and fibre.

Présentation

Version intégrale (2,63 Mb)

Page publiée le 11 juillet 2017