A 42-d feeding experiment with growing Ross x Ross 508 broilers showed that the nutritional value of insect-protected and herbicide-tolerant corn was comparable to that of the genetically similar control and 5 commercial reference corn hybrids. MON 88017 provides protection from feeding damage by coleopteran pest corn rootworm and is tolerant to the action of glyphosate, the active ingredient in the Roundup family of agricultural herbicides. MON 88017 x MON 810 was developed by the traditional breeding of MON 88017 with MON 810, which provides protection from the European corn borer and other lepidopteran pests. A randomized complete block design was used with 8 dietary treatments in each of 5 replicated blocks of pens. No differences among diets were observed (P > 0.05) in performance (final live weights, feed intake, feed conversion, and adjusted feed conversion), carcass yield (chill, fat pad, breast, thigh, wing, and drum weight), or percentage of moisture, protein, and fat in breast meat and moisture and fat in thigh meat. Thigh protein was similar (P > 0.05) in broilers fed diets containing MON 88017 x MON 810 and conventional control or all commercial reference corns; however, differences (P < 0.05) were noted for the percentage of thigh protein among broilers fed the control and 2 of the 5 reference diets, attributable to biological variability among the conventional corn hybrids. Broilers overall performed consistently and had similar carcass yield and meat composition when fed diets containing MON 88017 or MON 88017 x MON 810 as compared with those fed the conventional control and commercial diets, supporting a conclusion of nutritional equivalence.

The present study aimed to optimize a suitable nutrient management practice with the co-application of organic amendments and leguminous intercropping for sustainable maize production. The experiment was conducted during the Kharif and Rabi seasons of 2022-’23 in randomized block design following ten treatments. Maize (hybrid COH (M) 6) seeds were sown in rows at a spacing of 60ⅹ25 cm following the treatments: T1 - Absolute control, T2 – Recommended Dose of Fertilizers (RDF) alone, T3 - RDF + Poultry Manure (4t ha-1), T4 - RDF + FYM (12.5 t ha-1), T5 - RDF + Poultry Manure (4 t ha-1) + Black gram intercropping, T6 - RDF + FYM (12.5 t ha-1) + Black gram intercropping, T7 - 75 % RDF + Poultry Manure (4 t ha-1) + Black gram intercropping, T8 - 75% RDF + FYM (12.5 t ha-1) + Black gram intercropping, T9 - 50% RDF + Poultry Manure (4 t ha-1) + Black gram intercropping, T10 - 50% RDF + FYM (12.5 t ha-1) + Black gram intercropping. Observations for plant height, dry matter production (DMP), and Relative Chlorophyll Content (RCC) were recorded at different phenological stages on 30, 45, and 60 DAS. The results showed that the treatment T5 amended with poultry manure recorded the highest growth attributes and yield during the two consecutive seasons, followed by T6, T7, and T8, whereas the lowest was in T1. While comparing growth and yield attributes in in the second season (Rabi 2022-’23), the treatments T7 and T8 with 75 % RDF + FYM/poultry manure remarked substantial yield increase. The results suggest that co-application of organic manures like poultry manure or FYM with reduced dosages of mineral fertilizer, could be recommended as an optimal nutrient management strategy for sustainable maize production.