Addition of dl-Methionine to Starting and Growing Mashes

Methionine and Choline in a Simplified Chick Ration ,

“…Since these results, are not in entire agreement with those of Bird and Mattingly (1945) and Clandinin, Cravens, Halpin, and Hart (1946), certain differences in the experimental conditions should be noted. At this Station none of the synthetic vitamins, including choline, has been effective as a supplement to a mixed grain ration containing wheat bran, wheat standard middlings, ground oats, and alfalfa leaf meal.…”

“…Klose and Almquist (1941) obtained results which indicated that chicks could synthesize methionine from the choline of soybean oil meal (or choline additions) only when homocystine was added to the diet. Bird and Mattingly (1945) reported that the addition of dl-methionine to a practical diet containing soybean oil meal as the only protein supplement brought about significantly improved growth of chicks. They also indicated that their diet probably required no supplement other than methionine for optimum growth.…”

The Value of Supplemental Methionine in Practical Chick Starter and Broiler Rations

“…The latter (Almquist, Mecchi, Kratzer and Grau, 1942), using a purified basal diet supplemented with either ground raw soybeans or commercial-solvent-process heated soybean oil meal, concluded that heated soybean oil meal was slightly deficient in methionine for growth of chicks when it contributed 20 grams of crude protein per 100 grams of diet. Bird and Mattingly (1945) ;Clandinin, Cravens, Halpin and Hart (1946) ;Gerry, Carrick and Hauge (1948) all have shown beneficial effects of supplementing practical type chick starting rations with methionine when soybean oil meal was the only protein supplement. Bird and Mattingly (1945) also showed that supplementation of their rations with 4 percent fish meal gave a growth response almost equal to that obtained by supplementing a soybean oil meal ration with 0.2 percent DLmethionine.…”

“…Bird and Mattingly (1945) ;Clandinin, Cravens, Halpin and Hart (1946) ;Gerry, Carrick and Hauge (1948) all have shown beneficial effects of supplementing practical type chick starting rations with methionine when soybean oil meal was the only protein supplement. Bird and Mattingly (1945) also showed that supplementation of their rations with 4 percent fish meal gave a growth response almost equal to that obtained by supplementing a soybean oil meal ration with 0.2 percent DLmethionine. Richardson and Blaylock T HE ever-increasing economic pressure on protein supplements used for poultry feeds is resulting in the use of large quantities of cereal protein concentrates and particularly soybean oil meal.…”

The Relation of Nutrition to Production and Hatchability of Chicken Eggs.

“…Choline and methionine were selected for study because Almquist and associates (1942), Berry et al (1943), Bird and Mattingly (1945), and…”