DAIRY FARMING DAIRYING AGROTEOHNY. 1105 



per 1,000 kg. body weighl was consumed, sirup and molasses in smaller quantities, 

 however, decreased digestibility, a fact which is explained by the laxative properties 

 of the alkaline salts in bee! molasses. 



The toxicity and hygienic and therapeutic role of the mineral matter of 

 molasses for horses, J. Ai.<>i mi: | /. Cong. Internal. Aliment. Ration. BHail, 1905, 

 Raps. , pp. 69-85) . From the experimental evidence presented the conclusion was 

 drawn thai molasses is harmless and a hygienic nutritive material when the amount 

 consumed per day does nol exceed '■'> or 4 k:_ r . per horse. 



Hunter-horse production in Ireland, \V. .1. Kiwi ic, | / . S. Dept. Agr., Bur. 

 Anim. Tndus. Circ. 87, pp. /• s '- > .'.'■'', pis. 8).— This is reprinted from the annual 

 report of the Bureau for 1904 I E. S. R., 17, p. 691 I. 



The poultry industry of Petaluma, California, I'. II. Lawler I U. S. l>>i>t. 

 Agr., Bur. .[mm. Indus. Circ. 92, pp. 816-822, pis. 8). — This i- reprinted from the 

 annual rep..rt of the Bureau for L904 E. 8. R., 17. p. 692). 



DAIRY FARMING DAIRYING- AGR0TECHNY. 



The influence of changes in feeding- upon milk production, J. I.. Hills 

 {Vermont Shi. Rpt. 1905, />j>. ■'>',! 876). — This is a compilation and discussion of the 

 data obtained in thefeeding trials reported in the tenth to the sixteenth annual 



reports of the station (1896-1903), inclusive, and relates to the effect upon produc- 

 tion of changes in the total and digestible dry matter, digestible protein, digestible 

 carbohydrates, and calories. Many deductions are made from the numerous tables 

 which show in a condensed form, food consumption; production of milk, total 



solids, and fat with the food cost of each; and production proportioned to f 1 



consumption. 



Among the author's generalizations are the following: 



"(1) The testimony afforded by the results as between different rations and the 

 same ration fed in different amounts is so nearly alike, speaking broadly, that one 

 may safely group them together and argue on the hasis of variations in dry matter 

 or in nutrient consumption regardless of their origin. 



"(2) When like quantities of the several nutrients were eaten, production was 

 unaltered. 



"(3) A 6 per cent increase or decrease in total dry matter eaten was accompanied 

 by a corresponding 2 per cent change in yield; a lo per cenl increase or decrease, by 

 a 5 per cent change in yield. . . . 



"(4) A 7 percent increase or decrease in digestible dry matter eaten was accom- 

 panied by a 3 per cent change in yield; a 12 percent increase or decrease, by a <; per 



cent change in yield; or. in other word-, a- f 1 varied so did the yield, but to a !•■>< 



degree 



"(5) As for digestible dry matter, so for digestible carbohydrates and for calorics, 

 word for word and. essentially, figure for figure. 



"(6) A ."> per cent increase or decrease in digestible protein eaten had no effect on 

 production; a 7 per cenl increase or decrease was accompanied by a 2 to 3 per cenl 

 change in yield; and a 22 per cent increase or decrease by a 4 to •"> per cent 

 change. ... 



"(7) A change in feeding of from more than to less than 15.5 lbs. of digestible 

 nutrients or vice versa caused more decided changes in yield than did modifications 

 in feeding on either side of that line, the average figures being 7 per cent and 4 per 

 cent. 



" (8) The nutritive ratio changes were evidenced in production fluctuations much 

 as were those of digestible protein; when it narrowed, production generally increased, 

 and vice versa. 



