Journal of Animal Production Research http://journal.napri.gov.ng/index.php/japr <p>Journal of Animal Production Research is the only journal that is published by National Animal Production Research Institute for the dissemination of information relevant to the improvement of animal production especially in Africa and the tropics. Materials considered for publication include Reports of original research, Review Articles, Book Review, News and Notes in the field of animal production.</p> A.B.U. Press en-US Journal of Animal Production Research 0189-0514 EFFECT OF FERTILIZER RATES ON FORAGE YIELD AND QUALITY OF (BRACHIARIA RUZIZIENSIS) http://journal.napri.gov.ng/index.php/japr/article/view/125 <p>The study was conducted to evaluate the effect of varying fertilizer levels (Compound fertilizer NPK 15:15:15) on the forage yield and nutritional quality of Brachiaria ruziziensis, in the Northern Guinea Savanna of Nigeria. The experiment was laid in a randomized complete block design (RCBD) in a 4x3 factorial arrangements comprising of four fertilizer doses (0, 20, 40 and 60 kg/ha) replicated three times and harvested at 10,12 and 14weeks. The growth components showed that plant height (74.9 cm) and leave length (33.3 cm) were significantly (P&lt;0.05) higher at 60kg/ha and 40kg/ha, respectively. Number of tillers (23) were significantly higher (P&lt;0.05) at 12 weeks after sowing (WAS). Varying levels of fertilizer significantly (P&lt;0.05) affected fresh forage yield with the highest value recorded at 60kg/ha (15.8t/ha). Age of cutting also had significant (P&lt;0.05) effect on yield fresh forage yield and dry matter yield. The highest significantly fresh weight yield (16.3t/ha) was recorded at 12 weeks after sowing (WAS), while and dry weight (4.3t/ha) was also recorded at 14 weeks after sowing (WAS) respectively. The proximate Compositions: Crude protein, Crude fiber and Nitrogen free extract were significantly (P&lt;0.05) affected by the varying level of fertilizer, whereas DM, C.P, C.F, E.E, and NFE were also significantly (P&lt;0.05) affected with different age of cutting. The highest DM (94.3%), CP (8.99%) and CF (39.39%) were recorded at 10, 12 and 12 weeks after sowing (WAS), respectively. EE (7.88%) and Ash (7.67%) were higher at 12 weeks after sowing. Calcium content of the forage material and Calcium (Ca): Phosphorus (P) ratio were significantly (P&lt;0.05) affected as the level of fertilizer application varies with 60kg/ha rate recording the highest percentage (1.62%) and (6.23:1) respectively. Calcium (Ca), Phosphorus (P) and Ca: P ratio were similar (P&gt;0.05) at different cutting intervals. It can be concluded from the result of this study that the use of NPK 15:15:15 compound fertilizer at 60 kg/ha on Brachiaria ruziziensis gave a better forage yield, Crude protein was higher when harvested at 12 weeks after sowing, mineral composition (Ca and P) was also optimum. Therefore, 60 kg/ha is recommended on Brachiaria ruziziensis for forage yield and nutrient composition for smallholder farmers and livestock owners in the Northern Guinea Savanna of Nigeria.</p> S. A. Ahmed, J. T Amodu., S. B. Abdu, Y. M. 1Ishiaku, S. A. 1Abubakar, , H. Ibrahim O. T. Lasisi, A. Usman, S. G. Salisu, Copyright (c) 2022 Journal of Animal Production Research 2018-12-30 2018-12-30 30 2 192 203 GROWTH PERFORMANCE OF YANKASA RAMS FED GROUNDNUT HAULMS AND MAIZE STOVER IN A TOTAL MIXED RATION IN NORTHERN GUINEA SAVANNAH http://journal.napri.gov.ng/index.php/japr/article/view/114 <p>An experiment was conducted to investigate the Performance of Yankasa rams fed Samnut-22 haulms and Double-red maize stover in a total mixed ration in Northern Guinea Savannah at the Department of Animal Science Teaching and Research Farm, Samaru, Zaria. Twelve (12) Yankasa rams with average weight of 24±0.5 kg were allotted to three (3) dietary treatments containing maize stover (MS) (15 %), groundnut haulms (GH) (15 %) and MS (7.5 %) GH (7.5 %) inclusion. The rams were individually fed at 3.5 % body weight daily for a period of twelve (12) weeks in a Complete Randomized Design (CRD) with four replicates. The results of the animal trials showed that the performance of rams fed GH (15 %) inclusion had the highest (P&lt;0.05) final body weight (31.75 kg), average weight gain (6.75 kg/ram) (80 g/ram/day) and feed conversion ratio (12.21) compared to 29.45 kg final body weight, 4.95 kg/ram and 58.93 g/ram/day average daily gain and 20.17 feed conversion ratio in rams fed MS (7.5 %) GH (7.5 %) inclusion. The Digestibility coefficients of crude protein (75.31 %), crude fibre (84.78 %) and ether extract (96.39 %) were significantly (P&lt;0.05) higher in Yankasa rams fed GH y(15 %) inclusion compared to that of rams fed MS(15 %) inclusion with 68.51 % crude protein, 76.68 % crude fibre and 94.45 % ether extract digestibility coefficients. The Nitrogen retained (16.97) and N retained as % intake (67.86 %) were significantly higher in rams fed GH (15 %) inclusion compared to rams fed MS (15 %) inclusion with 9.75 and 45.67 % nitrogen retained and N retained as % intake, respectively. The cost per kg of feed (? 70.15 k) and net benefit (? 19,550.9.00k) were significantly (P&lt;0.05) higher for GH (15 %) inclusion compared to ? 67.97 k cost per kg of feed and ? 17,126.00k net benefit in MS (15 %) and MS (7.5 %) GH (7.5 %) inclusion, respectively. It was concluded that feeding of Yankasa rams with 15 % groundnut haulms inclusion in a total mixed ration improved growth performance and economic return of Yankasa rams in Northern Guinea Savannah of Nigeria.</p> S. G. Salisu, M. R. Hassan, H. Y. Adamu, S. B. Abdu, U. Abdullahi, S. A. Ahmad, B. M. Munza, Y. M. Ishiaku, U. S. Jibril, Copyright (c) 2020 Journal of Animal Production Research 2018-12-30 2018-12-30 30 2 116 125